#ifndef GIT_COMPAT_UTIL_H #define GIT_COMPAT_UTIL_H #define _FILE_OFFSET_BITS 64 /* Derived from Linux "Features Test Macro" header * Convenience macros to test the versions of gcc (or * a compatible compiler). * Use them like this: * #if GIT_GNUC_PREREQ (2,8) * ... code requiring gcc 2.8 or later ... * #endif */ #if defined(__GNUC__) && defined(__GNUC_MINOR__) # define GIT_GNUC_PREREQ(maj, min) \ ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min)) #else #define GIT_GNUC_PREREQ(maj, min) 0 #endif #ifndef FLEX_ARRAY /* * See if our compiler is known to support flexible array members. */ #if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && (!defined(__SUNPRO_C) || (__SUNPRO_C > 0x580)) # define FLEX_ARRAY /* empty */ #elif defined(__GNUC__) # if (__GNUC__ >= 3) # define FLEX_ARRAY /* empty */ # else # define FLEX_ARRAY 0 /* older GNU extension */ # endif #endif /* * Otherwise, default to safer but a bit wasteful traditional style */ #ifndef FLEX_ARRAY # define FLEX_ARRAY 1 #endif #endif /* * BUILD_ASSERT_OR_ZERO - assert a build-time dependency, as an expression. * @cond: the compile-time condition which must be true. * * Your compile will fail if the condition isn't true, or can't be evaluated * by the compiler. This can be used in an expression: its value is "0". * * Example: * #define foo_to_char(foo) \ * ((char *)(foo) \ * + BUILD_ASSERT_OR_ZERO(offsetof(struct foo, string) == 0)) */ #define BUILD_ASSERT_OR_ZERO(cond) \ (sizeof(char [1 - 2*!(cond)]) - 1) #if defined(__GNUC__) && (__GNUC__ >= 3) # if GIT_GNUC_PREREQ(3, 1) /* &arr[0] degrades to a pointer: a different type from an array */ # define BARF_UNLESS_AN_ARRAY(arr) \ BUILD_ASSERT_OR_ZERO(!__builtin_types_compatible_p(__typeof__(arr), \ __typeof__(&(arr)[0]))) # else # define BARF_UNLESS_AN_ARRAY(arr) 0 # endif #endif /* * ARRAY_SIZE - get the number of elements in a visible array * <at> x: the array whose size you want. * * This does not work on pointers, or arrays declared as [], or * function parameters. With correct compiler support, such usage * will cause a build error (see the build_assert_or_zero macro). */ #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]) + BARF_UNLESS_AN_ARRAY(x)) #define bitsizeof(x) (CHAR_BIT * sizeof(x)) #define maximum_signed_value_of_type(a) \ (INTMAX_MAX >> (bitsizeof(intmax_t) - bitsizeof(a))) #define maximum_unsigned_value_of_type(a) \ (UINTMAX_MAX >> (bitsizeof(uintmax_t) - bitsizeof(a))) /* * Signed integer overflow is undefined in C, so here's a helper macro * to detect if the sum of two integers will overflow. * * Requires: a >= 0, typeof(a) equals typeof(b) */ #define signed_add_overflows(a, b) \ ((b) > maximum_signed_value_of_type(a) - (a)) #define unsigned_add_overflows(a, b) \ ((b) > maximum_unsigned_value_of_type(a) - (a)) #ifdef __GNUC__ #define TYPEOF(x) (__typeof__(x)) #else #define TYPEOF(x) #endif #define MSB(x, bits) ((x) & TYPEOF(x)(~0ULL << (bitsizeof(x) - (bits)))) #define HAS_MULTI_BITS(i) ((i) & ((i) - 1)) /* checks if an integer has more than 1 bit set */ #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d)) /* Approximation of the length of the decimal representation of this type. */ #define decimal_length(x) ((int)(sizeof(x) * 2.56 + 0.5) + 1) #if defined(__sun__) /* * On Solaris, when _XOPEN_EXTENDED is set, its header file * forces the programs to be XPG4v2, defeating any _XOPEN_SOURCE * setting to say we are XPG5 or XPG6. Also on Solaris, * XPG6 programs must be compiled with a c99 compiler, while * non XPG6 programs must be compiled with a pre-c99 compiler. */ # if __STDC_VERSION__ - 0 >= 199901L # define _XOPEN_SOURCE 600 # else # define _XOPEN_SOURCE 500 # endif #elif !defined(__APPLE__) && !defined(__FreeBSD__) && !defined(__USLC__) && \ !defined(_M_UNIX) && !defined(__sgi) && !defined(__DragonFly__) && \ !defined(__TANDEM) && !defined(__QNX__) && !defined(__MirBSD__) && \ !defined(__CYGWIN__) #define _XOPEN_SOURCE 600 /* glibc2 and AIX 5.3L need 500, OpenBSD needs 600 for S_ISLNK() */ #define _XOPEN_SOURCE_EXTENDED 1 /* AIX 5.3L needs this */ #endif #define _ALL_SOURCE 1 #define _GNU_SOURCE 1 #define _BSD_SOURCE 1 #define _DEFAULT_SOURCE 1 #define _NETBSD_SOURCE 1 #define _SGI_SOURCE 1 #if defined(WIN32) && !defined(__CYGWIN__) /* Both MinGW and MSVC */ # if defined (_MSC_VER) && !defined(_WIN32_WINNT) # define _WIN32_WINNT 0x0502 # endif #define WIN32_LEAN_AND_MEAN /* stops windows.h including winsock.h */ #include <winsock2.h> #include <windows.h> #define GIT_WINDOWS_NATIVE #endif #include <unistd.h> #include <stdio.h> #include <sys/stat.h> #include <fcntl.h> #include <stddef.h> #include <stdlib.h> #include <stdarg.h> #include <string.h> #ifdef HAVE_STRINGS_H #include <strings.h> /* for strcasecmp() */ #endif #include <errno.h> #include <limits.h> #ifdef NEEDS_SYS_PARAM_H #include <sys/param.h> #endif #include <sys/types.h> #include <dirent.h> #include <sys/time.h> #include <time.h> #include <signal.h> #include <assert.h> #include <regex.h> #include <utime.h> #include <syslog.h> #ifndef NO_SYS_POLL_H #include <sys/poll.h> #else #include <poll.h> #endif #ifdef HAVE_BSD_SYSCTL #include <sys/sysctl.h> #endif #if defined(__MINGW32__) /* pull in Windows compatibility stuff */ #include "compat/mingw.h" #elif defined(_MSC_VER) #include "compat/msvc.h" #else #include <sys/utsname.h> #include <sys/wait.h> #include <sys/resource.h> #include <sys/socket.h> #include <sys/ioctl.h> #include <termios.h> #ifndef NO_SYS_SELECT_H #include <sys/select.h> #endif #include <netinet/in.h> #include <netinet/tcp.h> #include <arpa/inet.h> #include <netdb.h> #include <pwd.h> #include <sys/un.h> #ifndef NO_INTTYPES_H #include <inttypes.h> #else #include <stdint.h> #endif #ifdef NO_INTPTR_T /* * On I16LP32, ILP32 and LP64 "long" is the save bet, however * on LLP86, IL33LLP64 and P64 it needs to be "long long", * while on IP16 and IP16L32 it is "int" (resp. "short") * Size needs to match (or exceed) 'sizeof(void *)'. * We can't take "long long" here as not everybody has it. */ typedef long intptr_t; typedef unsigned long uintptr_t; #endif #undef _ALL_SOURCE /* AIX 5.3L defines a struct list with _ALL_SOURCE. */ #include <grp.h> #define _ALL_SOURCE 1 #endif /* used on Mac OS X */ #ifdef PRECOMPOSE_UNICODE #include "compat/precompose_utf8.h" #else #define precompose_str(in,i_nfd2nfc) #define precompose_argv(c,v) #define probe_utf8_pathname_composition(a,b) #endif #ifdef MKDIR_WO_TRAILING_SLASH #define mkdir(a,b) compat_mkdir_wo_trailing_slash((a),(b)) extern int compat_mkdir_wo_trailing_slash(const char*, mode_t); #endif #ifdef NO_STRUCT_ITIMERVAL struct itimerval { struct timeval it_interval; struct timeval it_value; }; #endif #ifdef NO_SETITIMER #define setitimer(which,value,ovalue) #endif #ifndef NO_LIBGEN_H #include <libgen.h> #else #define basename gitbasename extern char *gitbasename(char *); #endif #ifndef NO_ICONV #include <iconv.h> #endif #ifndef NO_OPENSSL #ifdef __APPLE__ #define __AVAILABILITY_MACROS_USES_AVAILABILITY 0 #include <AvailabilityMacros.h> #undef DEPRECATED_ATTRIBUTE #define DEPRECATED_ATTRIBUTE #undef __AVAILABILITY_MACROS_USES_AVAILABILITY #endif #include <openssl/ssl.h> #include <openssl/err.h> #ifdef NO_HMAC_CTX_CLEANUP #define HMAC_CTX_cleanup HMAC_cleanup #endif #endif /* On most systems <netdb.h> would have given us this, but * not on some systems (e.g. z/OS). */ #ifndef NI_MAXHOST #define NI_MAXHOST 1025 #endif #ifndef NI_MAXSERV #define NI_MAXSERV 32 #endif /* On most systems <limits.h> would have given us this, but * not on some systems (e.g. GNU/Hurd). */ #ifndef PATH_MAX #define PATH_MAX 4096 #endif #ifndef PRIuMAX #define PRIuMAX "llu" #endif #ifndef PRIu32 #define PRIu32 "u" #endif #ifndef PRIx32 #define PRIx32 "x" #endif #ifndef PRIo32 #define PRIo32 "o" #endif #ifndef PATH_SEP #define PATH_SEP ':' #endif #ifdef HAVE_PATHS_H #include <paths.h> #endif #ifndef _PATH_DEFPATH #define _PATH_DEFPATH "/usr/local/bin:/usr/bin:/bin" #endif #ifndef STRIP_EXTENSION #define STRIP_EXTENSION "" #endif #ifndef has_dos_drive_prefix static inline int git_has_dos_drive_prefix(const char *path) { return 0; } #define has_dos_drive_prefix git_has_dos_drive_prefix #endif #ifndef is_dir_sep static inline int git_is_dir_sep(int c) { return c == '/'; } #define is_dir_sep git_is_dir_sep #endif #ifndef offset_1st_component static inline int git_offset_1st_component(const char *path) { return is_dir_sep(path[0]); } #define offset_1st_component git_offset_1st_component #endif #ifndef find_last_dir_sep static inline char *git_find_last_dir_sep(const char *path) { return strrchr(path, '/'); } #define find_last_dir_sep git_find_last_dir_sep #endif #if defined(__HP_cc) && (__HP_cc >= 61000) #define NORETURN __attribute__((noreturn)) #define NORETURN_PTR #elif defined(__GNUC__) && !defined(NO_NORETURN) #define NORETURN __attribute__((__noreturn__)) #define NORETURN_PTR __attribute__((__noreturn__)) #elif defined(_MSC_VER) #define NORETURN __declspec(noreturn) #define NORETURN_PTR #else #define NORETURN #define NORETURN_PTR #ifndef __GNUC__ #ifndef __attribute__ #define __attribute__(x) #endif #endif #endif /* The sentinel attribute is valid from gcc version 4.0 */ #if defined(__GNUC__) && (__GNUC__ >= 4) #define LAST_ARG_MUST_BE_NULL __attribute__((sentinel)) #else #define LAST_ARG_MUST_BE_NULL #endif #include "compat/bswap.h" #include "wildmatch.h" struct strbuf; /* General helper functions */ extern void vreportf(const char *prefix, const char *err, va_list params); extern void vwritef(int fd, const char *prefix, const char *err, va_list params); extern NORETURN void usage(const char *err); extern NORETURN void usagef(const char *err, ...) __attribute__((format (printf, 1, 2))); extern NORETURN void die(const char *err, ...) __attribute__((format (printf, 1, 2))); extern NORETURN void die_errno(const char *err, ...) __attribute__((format (printf, 1, 2))); extern int error(const char *err, ...) __attribute__((format (printf, 1, 2))); extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2))); #ifndef NO_OPENSSL #ifdef APPLE_COMMON_CRYPTO #include "compat/apple-common-crypto.h" #else #include <openssl/evp.h> #include <openssl/hmac.h> #endif /* APPLE_COMMON_CRYPTO */ #include <openssl/x509v3.h> #endif /* NO_OPENSSL */ /* * Let callers be aware of the constant return value; this can help * gcc with -Wuninitialized analysis. We restrict this trick to gcc, though, * because some compilers may not support variadic macros. Since we're only * trying to help gcc, anyway, it's OK; other compilers will fall back to * using the function as usual. */ #if defined(__GNUC__) static inline int const_error(void) { return -1; } #define error(...) (error(__VA_ARGS__), const_error()) #endif extern void set_die_routine(NORETURN_PTR void (*routine)(const char *err, va_list params)); extern void set_error_routine(void (*routine)(const char *err, va_list params)); extern void set_die_is_recursing_routine(int (*routine)(void)); extern int starts_with(const char *str, const char *prefix); /* * If the string "str" begins with the string found in "prefix", return 1. * The "out" parameter is set to "str + strlen(prefix)" (i.e., to the point in * the string right after the prefix). * * Otherwise, return 0 and leave "out" untouched. * * Examples: * * [extract branch name, fail if not a branch] * if (!skip_prefix(ref, "refs/heads/", &branch) * return -1; * * [skip prefix if present, otherwise use whole string] * skip_prefix(name, "refs/heads/", &name); */ static inline int skip_prefix(const char *str, const char *prefix, const char **out) { do { if (!*prefix) { *out = str; return 1; } } while (*str++ == *prefix++); return 0; } /* * If buf ends with suffix, return 1 and subtract the length of the suffix * from *len. Otherwise, return 0 and leave *len untouched. */ static inline int strip_suffix_mem(const char *buf, size_t *len, const char *suffix) { size_t suflen = strlen(suffix); if (*len < suflen || memcmp(buf + (*len - suflen), suffix, suflen)) return 0; *len -= suflen; return 1; } /* * If str ends with suffix, return 1 and set *len to the size of the string * without the suffix. Otherwise, return 0 and set *len to the size of the * string. * * Note that we do _not_ NUL-terminate str to the new length. */ static inline int strip_suffix(const char *str, const char *suffix, size_t *len) { *len = strlen(str); return strip_suffix_mem(str, len, suffix); } static inline int ends_with(const char *str, const char *suffix) { size_t len; return strip_suffix(str, suffix, &len); } #if defined(NO_MMAP) || defined(USE_WIN32_MMAP) #ifndef PROT_READ #define PROT_READ 1 #define PROT_WRITE 2 #define MAP_PRIVATE 1 #endif #define mmap git_mmap #define munmap git_munmap extern void *git_mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset); extern int git_munmap(void *start, size_t length); #else /* NO_MMAP || USE_WIN32_MMAP */ #include <sys/mman.h> #endif /* NO_MMAP || USE_WIN32_MMAP */ #ifdef NO_MMAP /* This value must be multiple of (pagesize * 2) */ #define DEFAULT_PACKED_GIT_WINDOW_SIZE (1 * 1024 * 1024) #else /* NO_MMAP */ /* This value must be multiple of (pagesize * 2) */ #define DEFAULT_PACKED_GIT_WINDOW_SIZE \ (sizeof(void*) >= 8 \ ? 1 * 1024 * 1024 * 1024 \ : 32 * 1024 * 1024) #endif /* NO_MMAP */ #ifndef MAP_FAILED #define MAP_FAILED ((void *)-1) #endif #ifdef NO_ST_BLOCKS_IN_STRUCT_STAT #define on_disk_bytes(st) ((st).st_size) #else #define on_disk_bytes(st) ((st).st_blocks * 512) #endif #ifdef NEEDS_MODE_TRANSLATION #undef S_IFMT #undef S_IFREG #undef S_IFDIR #undef S_IFLNK #undef S_IFBLK #undef S_IFCHR #undef S_IFIFO #undef S_IFSOCK #define S_IFMT 0170000 #define S_IFREG 0100000 #define S_IFDIR 0040000 #define S_IFLNK 0120000 #define S_IFBLK 0060000 #define S_IFCHR 0020000 #define S_IFIFO 0010000 #define S_IFSOCK 0140000 #ifdef stat #undef stat #endif #define stat(path, buf) git_stat(path, buf) extern int git_stat(const char *, struct stat *); #ifdef fstat #undef fstat #endif #define fstat(fd, buf) git_fstat(fd, buf) extern int git_fstat(int, struct stat *); #ifdef lstat #undef lstat #endif #define lstat(path, buf) git_lstat(path, buf) extern int git_lstat(const char *, struct stat *); #endif #define DEFAULT_PACKED_GIT_LIMIT \ ((1024L * 1024L) * (sizeof(void*) >= 8 ? 8192 : 256)) #ifdef NO_PREAD #define pread git_pread extern ssize_t git_pread(int fd, void *buf, size_t count, off_t offset); #endif /* * Forward decl that will remind us if its twin in cache.h changes. * This function is used in compat/pread.c. But we can't include * cache.h there. */ extern ssize_t read_in_full(int fd, void *buf, size_t count); #ifdef NO_SETENV #define setenv gitsetenv extern int gitsetenv(const char *, const char *, int); #endif #ifdef NO_MKDTEMP #define mkdtemp gitmkdtemp extern char *gitmkdtemp(char *); #endif #ifdef NO_MKSTEMPS #define mkstemps gitmkstemps extern int gitmkstemps(char *, int); #endif #ifdef NO_UNSETENV #define unsetenv gitunsetenv extern void gitunsetenv(const char *); #endif #ifdef NO_STRCASESTR #define strcasestr gitstrcasestr extern char *gitstrcasestr(const char *haystack, const char *needle); #endif #ifdef NO_STRLCPY #define strlcpy gitstrlcpy extern size_t gitstrlcpy(char *, const char *, size_t); #endif #ifdef NO_STRTOUMAX #define strtoumax gitstrtoumax extern uintmax_t gitstrtoumax(const char *, char **, int); #define strtoimax gitstrtoimax extern intmax_t gitstrtoimax(const char *, char **, int); #endif #ifdef NO_HSTRERROR #define hstrerror githstrerror extern const char *githstrerror(int herror); #endif #ifdef NO_MEMMEM #define memmem gitmemmem void *gitmemmem(const void *haystack, size_t haystacklen, const void *needle, size_t needlelen); #endif #ifdef NO_GETPAGESIZE #define getpagesize() sysconf(_SC_PAGESIZE) #endif #ifdef FREAD_READS_DIRECTORIES #ifdef fopen #undef fopen #endif #define fopen(a,b) git_fopen(a,b) extern FILE *git_fopen(const char*, const char*); #endif #ifdef SNPRINTF_RETURNS_BOGUS #ifdef snprintf #undef snprintf #endif #define snprintf git_snprintf extern int git_snprintf(char *str, size_t maxsize, const char *format, ...); #ifdef vsnprintf #undef vsnprintf #endif #define vsnprintf git_vsnprintf extern int git_vsnprintf(char *str, size_t maxsize, const char *format, va_list ap); #endif #ifdef __GLIBC_PREREQ #if __GLIBC_PREREQ(2, 1) #define HAVE_STRCHRNUL #define HAVE_MEMPCPY #endif #endif #ifndef HAVE_STRCHRNUL #define strchrnul gitstrchrnul static inline char *gitstrchrnul(const char *s, int c) { while (*s && *s != c) s++; return (char *)s; } #endif #ifndef HAVE_MEMPCPY #define mempcpy gitmempcpy static inline void *gitmempcpy(void *dest, const void *src, size_t n) { return (char *)memcpy(dest, src, n) + n; } #endif #ifdef NO_INET_PTON int inet_pton(int af, const char *src, void *dst); #endif #ifdef NO_INET_NTOP const char *inet_ntop(int af, const void *src, char *dst, size_t size); #endif #ifdef NO_PTHREADS #define atexit git_atexit extern int git_atexit(void (*handler)(void)); #endif extern void release_pack_memory(size_t); typedef void (*try_to_free_t)(size_t); extern try_to_free_t set_try_to_free_routine(try_to_free_t); #ifdef HAVE_ALLOCA_H # include <alloca.h> # define xalloca(size) (alloca(size)) # define xalloca_free(p) do {} while (0) #else # define xalloca(size) (xmalloc(size)) # define xalloca_free(p) (free(p)) #endif extern char *xstrdup(const char *str); extern void *xmalloc(size_t size); extern void *xmallocz(size_t size); extern void *xmallocz_gently(size_t size); extern void *xmemdupz(const void *data, size_t len); extern char *xstrndup(const char *str, size_t len); extern void *xrealloc(void *ptr, size_t size); extern void *xcalloc(size_t nmemb, size_t size); extern void *xmmap(void *start, size_t length, int prot, int flags, int fd, off_t offset); extern ssize_t xread(int fd, void *buf, size_t len); extern ssize_t xwrite(int fd, const void *buf, size_t len); extern ssize_t xpread(int fd, void *buf, size_t len, off_t offset); extern int xdup(int fd); extern FILE *xfdopen(int fd, const char *mode); extern int xmkstemp(char *template); extern int xmkstemp_mode(char *template, int mode); extern int odb_mkstemp(char *template, size_t limit, const char *pattern); extern int odb_pack_keep(char *name, size_t namesz, const unsigned char *sha1); extern char *xgetcwd(void); #define REALLOC_ARRAY(x, alloc) (x) = xrealloc((x), (alloc) * sizeof(*(x))) static inline char *xstrdup_or_null(const char *str) { return str ? xstrdup(str) : NULL; } static inline size_t xsize_t(off_t len) { if (len > (size_t) len) die("Cannot handle files this big"); return (size_t)len; } /* in ctype.c, for kwset users */ extern const unsigned char tolower_trans_tbl[256]; /* Sane ctype - no locale, and works with signed chars */ #undef isascii #undef isspace #undef isdigit #undef isalpha #undef isalnum #undef isprint #undef islower #undef isupper #undef tolower #undef toupper #undef iscntrl #undef ispunct #undef isxdigit extern const unsigned char sane_ctype[256]; #define GIT_SPACE 0x01 #define GIT_DIGIT 0x02 #define GIT_ALPHA 0x04 #define GIT_GLOB_SPECIAL 0x08 #define GIT_REGEX_SPECIAL 0x10 #define GIT_PATHSPEC_MAGIC 0x20 #define GIT_CNTRL 0x40 #define GIT_PUNCT 0x80 #define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0) #define isascii(x) (((x) & ~0x7f) == 0) #define isspace(x) sane_istest(x,GIT_SPACE) #define isdigit(x) sane_istest(x,GIT_DIGIT) #define isalpha(x) sane_istest(x,GIT_ALPHA) #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT) #define isprint(x) ((x) >= 0x20 && (x) <= 0x7e) #define islower(x) sane_iscase(x, 1) #define isupper(x) sane_iscase(x, 0) #define is_glob_special(x) sane_istest(x,GIT_GLOB_SPECIAL) #define is_regex_special(x) sane_istest(x,GIT_GLOB_SPECIAL | GIT_REGEX_SPECIAL) #define iscntrl(x) (sane_istest(x,GIT_CNTRL)) #define ispunct(x) sane_istest(x, GIT_PUNCT | GIT_REGEX_SPECIAL | \ GIT_GLOB_SPECIAL | GIT_PATHSPEC_MAGIC) #define isxdigit(x) (hexval_table[(unsigned char)(x)] != -1) #define tolower(x) sane_case((unsigned char)(x), 0x20) #define toupper(x) sane_case((unsigned char)(x), 0) #define is_pathspec_magic(x) sane_istest(x,GIT_PATHSPEC_MAGIC) static inline int sane_case(int x, int high) { if (sane_istest(x, GIT_ALPHA)) x = (x & ~0x20) | high; return x; } static inline int sane_iscase(int x, int is_lower) { if (!sane_istest(x, GIT_ALPHA)) return 0; if (is_lower) return (x & 0x20) != 0; else return (x & 0x20) == 0; } static inline int strtoul_ui(char const *s, int base, unsigned int *result) { unsigned long ul; char *p; errno = 0; ul = strtoul(s, &p, base); if (errno || *p || p == s || (unsigned int) ul != ul) return -1; *result = ul; return 0; } static inline int strtol_i(char const *s, int base, int *result) { long ul; char *p; errno = 0; ul = strtol(s, &p, base); if (errno || *p || p == s || (int) ul != ul) return -1; *result = ul; return 0; } #ifdef INTERNAL_QSORT void git_qsort(void *base, size_t nmemb, size_t size, int(*compar)(const void *, const void *)); #define qsort git_qsort #endif #ifndef DIR_HAS_BSD_GROUP_SEMANTICS # define FORCE_DIR_SET_GID S_ISGID #else # define FORCE_DIR_SET_GID 0 #endif #ifdef NO_NSEC #undef USE_NSEC #define ST_CTIME_NSEC(st) 0 #define ST_MTIME_NSEC(st) 0 #else #ifdef USE_ST_TIMESPEC #define ST_CTIME_NSEC(st) ((unsigned int)((st).st_ctimespec.tv_nsec)) #define ST_MTIME_NSEC(st) ((unsigned int)((st).st_mtimespec.tv_nsec)) #else #define ST_CTIME_NSEC(st) ((unsigned int)((st).st_ctim.tv_nsec)) #define ST_MTIME_NSEC(st) ((unsigned int)((st).st_mtim.tv_nsec)) #endif #endif #ifdef UNRELIABLE_FSTAT #define fstat_is_reliable() 0 #else #define fstat_is_reliable() 1 #endif #ifndef va_copy /* * Since an obvious implementation of va_list would be to make it a * pointer into the stack frame, a simple assignment will work on * many systems. But let's try to be more portable. */ #ifdef __va_copy #define va_copy(dst, src) __va_copy(dst, src) #else #define va_copy(dst, src) ((dst) = (src)) #endif #endif #if defined(__GNUC__) || (_MSC_VER >= 1400) || defined(__C99_MACRO_WITH_VA_ARGS) #define HAVE_VARIADIC_MACROS 1 #endif /* * Preserves errno, prints a message, but gives no warning for ENOENT. * Returns 0 on success, which includes trying to unlink an object that does * not exist. */ int unlink_or_warn(const char *path); /* * Tries to unlink file. Returns 0 if unlink succeeded * or the file already didn't exist. Returns -1 and * appends a message to err suitable for * 'error("%s", err->buf)' on error. */ int unlink_or_msg(const char *file, struct strbuf *err); /* * Preserves errno, prints a message, but gives no warning for ENOENT. * Returns 0 on success, which includes trying to remove a directory that does * not exist. */ int rmdir_or_warn(const char *path); /* * Calls the correct function out of {unlink,rmdir}_or_warn based on * the supplied file mode. */ int remove_or_warn(unsigned int mode, const char *path); /* * Call access(2), but warn for any error except "missing file" * (ENOENT or ENOTDIR). */ #define ACCESS_EACCES_OK (1U << 0) int access_or_warn(const char *path, int mode, unsigned flag); int access_or_die(const char *path, int mode, unsigned flag); /* Warn on an inaccessible file that ought to be accessible */ void warn_on_inaccessible(const char *path); /* Get the passwd entry for the UID of the current process. */ struct passwd *xgetpwuid_self(void); #ifdef GMTIME_UNRELIABLE_ERRORS struct tm *git_gmtime(const time_t *); struct tm *git_gmtime_r(const time_t *, struct tm *); #define gmtime git_gmtime #define gmtime_r git_gmtime_r #endif #if !defined(USE_PARENS_AROUND_GETTEXT_N) && defined(__GNUC__) #define USE_PARENS_AROUND_GETTEXT_N 1 #endif #ifndef SHELL_PATH # define SHELL_PATH "/bin/sh" #endif #ifndef _POSIX_THREAD_SAFE_FUNCTIONS #define flockfile(fh) #define funlockfile(fh) #define getc_unlocked(fh) getc(fh) #endif #endif